64494401 has 4 divisors (see below), whose sum is σ = 65457072. Its totient is φ = 63531732.

The previous prime is 64494383. The next prime is 64494421. The reversal of 64494401 is 10449446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64494401 - 2⁶ = 64494337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64494421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481235 + ... + 481368.

It is an arithmetic number, because the mean of its divisors is an integer number (16364268).

Almost surely, 2^64494401 is an apocalyptic number.

It is an amenable number.

64494401 is a deficient number, since it is larger than the sum of its proper divisors (962671).

64494401 is an equidigital number, since it uses as much as digits as its factorization.

64494401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962670.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 64494401 is about 8030.8406160252. The cubic root of 64494401 is about 401.0273611470.

The spelling of 64494401 in words is "sixty-four million, four hundred ninety-four thousand, four hundred one".